fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
...
fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
Starting 3 threads
Threads: 3
Threads: 3
Threads: 3: [mmm] [8.6% done] [  5176/  9732 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [11.8% done] [  9920/  3428 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [15.2% done] [  9452/  4740 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [18.2% done] [  4484/  9472 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [20.6% done] [  8908/  2112 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [23.5% done] [  2168/ 11012 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [25.7% done] [  8124/  3444 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [27.8% done] [  6968/  3200 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [29.7% done] [  5520/  4076 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [32.4% done] [  4896/  5020 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [34.2% done] [  6068/  2960 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [36.8% done] [  3748/  6140 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [38.5% done] [  7264/  1744 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [40.0% done] [  9404/     0 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.5% done] [  6612/  1456 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  3876/  5488 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  6048/  2260 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  3992/  2820 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  5836/  1660 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  4828/  2320 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  7380/     0 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.5% done] [  4040/  4088 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [55.6% done] [  2688/  4452 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.5% done] [  6688/   592 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.4% done] [  4348/   748 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [58.3% done] [  3800/  4052 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [59.2% done] [  5836/   412 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [58.8% done] [  1584/  5536 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21787, got signal=6
Threads: 3: [mmm] [61.5% done] [  1358/  5884 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [66.0% done] [  3508/  3900 kb/s] [eta 00m:17s]
fio: pid=21789, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21788, got signal=6

fio: (groupid=0): err= 0: pid=21787
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.3%, 4=19.2%, 8=79.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.0%, 10=0.8%, 20=3.3%, 50=16.0%, 100=10.1%
     lat (msec): 250=62.7%, 500=6.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21788
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.0%, 4=17.6%, 8=79.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.0%, 10=2.2%, 20=3.4%, 50=16.3%, 100=4.0%
     lat (msec): 250=61.5%, 500=10.0%, 750=1.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21789
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.8%, 4=17.0%, 8=80.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.0%, 10=2.2%, 20=2.9%, 50=13.0%, 100=7.7%
     lat (msec): 250=65.3%, 500=7.7%, 750=0.3%, 1000=0.2%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3220/2367, merge=611/509, ticks=78164/35124, in_queue=113288, util=99.09%
0.09user 0.20system 0:33.67elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2514minor)pagefaults 0swaps